Mathias Klons was born in Irrhausen, Germany according to church records, which list him as "ex irhausen." Irrhausen used to be a parish under the larger parish of Arzfeld, but later became its own independent parish. A search of the transcribed Irrhausen records on the Eifel Genealogy website showed no trace of any Klons'. The Irrhausen records are available here: [1].

An actual search of the original records has yet to be undertaken. This, however, is necessary to either confirm or reject Irrhausen as Mathias' birth place.